General Flashcards
(111 cards)
What doors does the CRJ 900 have
Main passenger door Galley service door (no stairs) Avionics bay doors Two FWD cargo bay doors Aft cargo bay door Aft
Emergency exits
6 exits plus one cockpit escape hatch
Main passenger door (Non-plug, type 1 doors)
Galley service door (Semi-plug, type 1)
4 wing emergency exits, 2 on each side (Plug, type 3)
-Only 2 on the CRJ 700
Plug type door
Opens inward. Pressurization keep the door in place.
Non-plug type door
Opens outward. Only latches keep the door from being pushed outward by differential pressure.
Semi-plug type doors
Mixture of plug and non plug
Type 1 exit doors
Big doors, level floor with no major steps (14 CFR 25.8070
Type 3 exit doors
Smaller. May have big steps up or down (14 CFR 25.807)
Main passenger door limitations
Max load capacity = 1000lbs
Max people on stairway = 4
4 locking pins (2 on each side)
2 upper latching cams
What is the box in the middle of the main door?
It’s a pressure relief flap to relief positive pressure inside the aircraft
What’s the wheel on the main door called?
Door support/assist wheel. It’s what causes the 1000lb weight limitation. This item is NOT in the MEL and cannot be deferred.
What holds the hand railing on the main passenger door in place?
There’s a locking pin that must be pushed all the way through. To put down the railing you have to pull the pin. Common test question.
Why are the main passenger doors painted
…
What are the green witness marks on the door for?
By aligning the green witness marks with the the interior green paint, it assures that the doors is positively latched. Additionally the DOORS page on the EICAS will tell you the condition of the doors
What kind of door is the cockpit emergency exit?
It’s a plug type door with an emergency rope
Galley service door
Type 1, semi-plug type door. No stairs. Has a silver hook that keeps the door open.
Over wing exit door
Plug type door. Has a lifeline with a caribeener. Not an MEL item and cannot be deferred.
Avionics bay door
Plug type door. You open this door on the outside but it moves inward and along rails. Allows maintenance people to access the avionics for fixes.
Aft cargo bay door
Plug type door, runs along tracks
Forward cargo doors
Semi-plug type door. Has pressure relief flap. All cargo areas are pressurized but only the aft compartment is air conditioned
Cargo limitations
Aft limit: 4375lbs
Forward limit: 850lbs
Aft: 75lbs/sqft
Forward: 30lbs/sqft
Aft equipment bay door
Located on the bottom aft fuselage. Unpressurized. Ventilated continuously. Outflow valve is next to the door.
Flight deck door
- Prevents unauthorized access
- Supposedly bulletproof
- Locks via a slide lock
- At each corner there’s a deadbolt knob which is used during lockdowns. Not used during normal ops as the door may become impossible to open again without maintenance.
EICAS door synoptic page
Shows the position of all doors. Doors are green when closed and locked. All doors are amber (caution) when open except the main passenger door which is red (warning)
Depressurization blowout panel
Allows the cabin to equalize to the pressure in the aft cargo bay during a depressurization